Multilift MD1, MDV -...

Multilift MD1, MDVInstallation and operating instructions

Installation and operating instructionshttp://net.grundfos.com/qr/i/96102304

GRUNDFOS INSTRUCTIONS

Original installation and operating instructions

Table of contents1. General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41.1 Symbols used in this document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2. Receiving the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62.1 Transporting the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62.2 Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

3. Installing the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83.1 Installing the controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.1.1 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83.1.2 Mechanical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.1.2.1 Installing the controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83.1.3 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

3.1.3.1 Connecting the mains supply to systems with direct-on-line starting . . . . . . . . . . . . .83.1.3.2 Connecting the mains supply to systems with star-delta starting . . . . . . . . . . . . . . . .9

3.2 Installing the lifting station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.2.1 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93.2.2 Mechanical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

3.2.2.1 Installing the pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103.2.2.2 Connecting the inlet pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113.2.2.3 Connecting the outlet pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123.2.2.4 Connecting the vent pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123.2.2.5 Installing a diaphragm pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

3.2.3 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143.2.3.1 Connecting the pumps electrically . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

4. Starting up the product. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

5. Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165.1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165.2 Pumped liquids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165.3 Lifting station. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

5.3.1 Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165.3.2 Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175.3.3 Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175.3.4 Motor protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175.3.5 Level sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185.3.6 Inspection cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .195.3.7 Non-return valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

5.4 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.4.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205.4.2 Buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215.4.3 Selector switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225.4.4 Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225.4.5 Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235.4.6 Factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235.4.7 Overview of input and output terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

5.5 Optional equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .255.5.1 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .255.5.2 Drainage pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

6. Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .266.1 Lifting station. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

6.1.1 Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .266.1.2 Type key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

6.2 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286.2.1 Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286.2.2 Type key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Multilift MD1, MDV | Table of contents | 2

7. Control functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.1 Settings menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

7.1.1 Start and stop levels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.1.2 Rated current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.1.3 Stop delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.1.4 Pump start delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.1.5 System start delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.1.6 Restarting delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.1.7 Alarm delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.1.8 Maintenance interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.1.9 Factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

7.2 Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.2.1 Fault log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.2.2 Hours counter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .307.2.3 Impulse counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .317.2.4 Highest measured motor current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

8. Operating the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .328.1 Setting the controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

8.1.1 Setting the start level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .328.1.2 Setting the rated current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .328.1.3 Setting the stop delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .328.1.4 Setting the start delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .328.1.5 Setting the alarm delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .328.1.6 Setting the maintenance interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .338.1.7 Setting of manual or automatic resetting of alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . .338.1.8 Resetting the controller to the factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

9. Servicing the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .349.1 Maintenance schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

9.1.1 Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .349.2 Mechanical maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

9.2.1 Maintaining the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .349.2.2 Cleaning the pressure tube and hose. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

9.3 Electrical maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

10. Returning the product for service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

11. Taking the product out of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

12. Fault finding the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3812.1 F001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3812.2 F002 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3912.3 F003 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3912.4 F007, F008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3912.5 F117 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4012.6 RELAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4012.7 TEMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4112.8 SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4112.9 EXTERN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4212.10 BATT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4212.11 The pumps do not start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4312.12 The pumps start randomly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

13. Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4513.1 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4513.2 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4513.3 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

14. Disposing of the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Multilift MD1, MDV | Table of contents | 3

1. General information

Read this document before you install the product. Installation and operationmust comply with local regulations and accepted codes of good practice.

Multilift MD1, MDV | General information | 4

1.1 Symbols used in this document

DANGERIndicates a hazardous situation which, if not avoided, will result in death or seri-ous personal injury.

WARNINGIndicates a hazardous situation which, if not avoided, could result in death or se-rious personal injury.

CAUTIONIndicates a hazardous situation which, if not avoided, could result in minor ormoderate personal injury.

The text accompanying the three hazard symbols DANGER, WARNING and CAUTION is struc-tured in the following way:

SIGNAL WORDDescription of the hazardConsequence of ignoring the warningAction to avoid the hazard.

A blue or grey circle with a white graphical symbol indicates that an action mustbe taken.

A red or grey circle with a diagonal bar, possibly with a black graphical symbol,indicates that an action must not be taken or must be stopped.

If these instructions are not observed, it may result in malfunction or damage tothe equipment.

Tips and advice that make the work easier.

Observe these instructions for explosion-proof products.

Multilift MD1, MDV | General information | 5

2. Receiving the product

2.1 Transporting the product

Do not stack the product.

WARNINGFalling objectsDeath or serious personal injury● Secure the product during transportation to prevent it from tilting or falling

down.

CAUTIONBack injuryMinor or moderate personal injury● Use lifting equipment.

CAUTIONCrushing of feetMinor or moderate personal injury● Wear safety shoes when moving the product.

Multilift MD1, MDV | | 6

2.2 Scope of deliveryThis list applies to a standard lifting station with one tank. Additional components are included ifyou have ordered an additional tank.

Pos. Quantity Description Specification

1 1 Pressure tube With 10 m hose

2 1 Flexible hose with two clamps for the ventpipe

DN 70

3 1 Inlet seal DN 150

4 1 Tank

5 3 Screws and expansion anchor for tank fixa-tion

6 1 Flexible connecting piece for optional dia-phragm pump and fittings

For 1 1/2" pipe

7 2 Seal for pump inlet DN 100

8 2 Connecting flange with stub DN 80 or DN 100

9 1 LC 221 controller

10, 11 2 Vent flange with vent hose and fitting DN 80 or DN 100

12 2 SE or SL pump With 10 m cable

2 Gasket kit DN 80 or DN 100, 8 bolts M16,nuts, washers and gaskets

1 Installation and operating instructions For lifting station and controller

1 Safety instructions For lifting station and controller

1

2

3

4

5

6

7

8

10

11

12

9

Related information• 5.5.1 Accessories


3. Installing the product

3.1 Installing the controller3.1.1 Location

Install the product in a location that meets the following requirements:• Place the product in a flood-safe place.• Make sure that the ambient temperature is within the limits.• Install the product as close as possible to the lifting station.• If you install the product outdoors, place it in a protective shed or enclosure, class IP55.• Do not expose the product to direct sunlight.

Related information• 13.1 Operating conditions

3.1.2 Mechanical installation



3.1.2.1 Installing the controllerYou can install the controller without removing the front cover.

1. Mark up the holes on a plane wall.2. Drill the holes.3. Remove the plastic caps that cover the screw holes in the controller or open the control cab-

inet.4. Install the controller with the cable entries pointing downwards.

If required, fit additional cable entries in the bottom plate of the control cabinet.5. Fit the screws.6. Fit the plastic caps, if any.

3.1.3 Electrical connection

DANGERElectric shockDeath or serious personal injury● Switch off the power supply before you start any work on the product. Make

sure that the power supply cannot be accidentally switched on.


3.1.3.1 Connecting the mains supply to systems with direct-on-line starting• Make sure that the supply voltage and frequency correspond to the values stated on the

nameplate on the lifting station.• If required according to local regulations, install an external all-pole main switch.• If required according to local regulations, install a backup fuse. See the controller name-

plate.Systems with direct-on-line starting have a 1.5 m power supply cable connected in the controlcabinet. The cable is equipped with a CEE plug.

1. Install a CEE power socket less than 1.5 m from the control cabinet.2. Connect the CEE plug to the CEE power socket.

Related information• 6.2.1 Nameplate

3.1.3.2 Connecting the mains supply to systems with star-delta starting• Make sure that the supply voltage and frequency correspond to the values stated on the

nameplate on the lifting station.• If required according to local regulations, install an external all-pole main switch.• If required according to local regulations, install a backup fuse. See the controller name-

plate.Systems with star-delta starting have an all-pole main switch on the cabinet front.

1. Set the main switch to off.2. Connect a power supply cable to the control cabinet through the cable entries and gaskets.

See the wiring diagram.3. Set the motor-protective circuit breakers in the control cabinet.


3.2 Installing the lifting station3.2.1 Location

Install the product in a location that meets the following requirements:• Make sure that the location is properly lit.• Make sure that the location is properly vented.• Make sure that there is at least 60 cm free space around the product.• We recommend that you install a drainage pump in a pump sump below floor level if you

install the lifting station in a basement with the risk of penetrating groundwater. In somecountries, a drainage pump or only a pump sump is required. We also recommend that youinstall a separate float switch next to the lifting station and connect it to terminals 13 and 14of LC 221. If the float switch is activated, the controller gives an acoustic alarm, the displayshows the external alarm EXTERN, a red LED flashes, and the common fault relay is activa-ted.

The lifting station may be flooded maximum 2 metres for seven days.


3.2.2 Mechanical installation



3.2.2.1 Installing the pumpsThe description below is for a system with isolating valves and a non-return valve.

Make sure that the weight from the inlet, outlet and vent pipes does not rest onthe tank. Long pipe sections and valves must be supported.

Torques for flanges +/- 5 Nm

Nominal diameter Screws Torque [Nm]*1 Torque [Nm]*2

DN 80 8 x M16 70 60

DN 100 8 x M16 70 60

DN 150 8 x M20 140 120

*1 Slightly lubricated threads*2 Well-lubricated threads

1. Fit an isolating valve to the tank.The isolating valves can be made of cast iron or PVC. The end of the PVC valve can bepushed directly into the socket with a plug-in seal.

2. Connect the pump to the isolating valve.3. Fasten the pump to the floor using the dowels and screws supplied with the lifting station.4. Fit the vent flange to the pump outlet flange.5. Drill a hole in the tank connection for the vent hose.6. Connect the vent hose to the vent flange and to the tank.7. Fit a non-return valve to the vent flange. Lifting stations must be provided with an approved

non-return valve according to EN 12050-4.8. Fit an isolating valve to the non-return valve.9. Install the second pump by following the steps above.

Example:


1

2

3

4

6

5

7 8

Pos. Description

1 Isolating valve, accessory

2 Dowels and screws

3 Pump

4 Non-return valve, accessory

5 Breeches pipe, accessory

6 Isolating valve, accessory

7 Vent hose

8 Vent flange

Related information• 3.2.2.3 Connecting the outlet pipe

3.2.2.2 Connecting the inlet pipe• All pipe connections must be flexible to reduce resonance.• Install an isolating valve in the inlet pipe.

Many installations require an inlet below the standard inlet 700 mm above the floor. You can fit alip seal on site. Use the following accessories:

Product number Description

91713755 Hole saw, ∅177

91712026 Centring drill

91071939 Lip seal, DN 150, internal ∅160


Never stand on the lifting station.

The internal diameter of the inlet pipe must be the same as the internal diameter of the inlet port.1. Cut open one of the inlet ports to be used and/or connect pipes to the second tank.


700

450

2. Fit the DN 150 socket seal in the inlet port or the optional DN 160 socket if the bottom inlet ischosen.

3. Insert the inlet pipe into the socket seal.To facilitate maintenance and service of the product, we recommend that you fit an isolatingvalve between the inlet port and the inlet pipe.Required size: DN 100 or DN 150.

Related information• 2.2 Scope of delivery

3.2.2.3 Connecting the outlet pipe• All pipe connections must be flexible to reduce resonance.


• To avoid sediment buildup in the outlet pipe, the pipe must be sized for a minimum flow ve-locity of 0.7 m/s.

Nominal diameter of pipe 80 mm 100 mm

Flow velocity: 0.7 m/s 3.6 l/s 5.6 l/s

• The collecting line must have a filling ratio of at least h/d equal to 0.7.• The collecting line must be at least one nominal diameter larger after the outlet pipe connec-

tion.• Do not taper off the outlet pipe in the flow direction.• Lifting stations must be provided with an approved non-return valve according to EN

12050-4.• The volume of the outlet pipe above the non-return valve up to the backflow level must be

smaller than the effective tank volume.• Install an isolating valve in outlet pipes of DN 80 and up.

1. Connect the outlet pipe to a breeches pipe.If you do not install a breeches pipe, make alternative pipework to connect an outlet pipe.

2. Lead the outlet pipe to the collecting line and connect these two.The outlet pipe must have a bend above the backflow level which is often the street level.Ask local authorities.

3.2.2.4 Connecting the vent pipeAll pipe connections must be flexible to reduce resonance.Lifting stations for black wastewater must be vented above roof level. However, you may connectthe ventilation, as a secondary ventilation, to the main building ventilation system. Place specialvent valves outside the building. Special vent valves are available as accessories.



1. Cut off the blanked-off end of the vent port on top of the tank.

2. Fit a DN 70, external Ø75, vent pipe to the vent port by means of the flexible connectionpiece and two hose clamps.

3. Lead the vent pipe into the main building ventilation system in accordance with local regula-tions.

3.2.2.5 Installing a diaphragm pump


You can use the optional, manually operated diaphragm pump for draining the tank before serviceor maintenance. To enable service or maintenance, we recommend that you fit an isolating valve.The tank has two outlets for 1 1/4" and 1 1/2" pipes. The flexible connecting piece for 1 1/2" issupplied with the lifting station.

1. Drill the outlet port with a 20 mm drill.


It is necessary to drill the outlet as it may have been filled with tank material during themoulding process.

2. Connect the outlet to the pipe for the diaphragm pump by means of the flexible connectingpiece and hose clamps.

3. Connect the diaphragm pump to the collecting line.The outlet pipe of the diaphragm pump must have a bend above the backflow level which isoften the street level. Ask your local authorities.

3.2.3 Electrical connection



3.2.3.1 Connecting the pumps electricallyDepending on the starting method of the pumps, the control cabinet is supplied with contactors fordirect-on-line or star-delta starting.

1. Make sure that the product is suitable for the power supply.The operating voltage and frequency are marked on the nameplate of the lifting station.

2. Lead all cables through the cable glands of the control cabinet.3. Connect the pumps according to the wiring diagram supplied with the control cabinet.4. Set the motor-protective circuit breakers in the control cabinet.



4. Starting up the product1. Set the selector switches to OFF.2. Switch on the power supply.

It takes up to 45 seconds to boot the controller.3. When the display is active, select the tank inlet height.

If the inlet height is between two values, select the lower value.The controller sets the start levels, the stop level and the high-level alarm according to theinlet height selected.

4. Set the rated motor current according to the nameplate.5. Open the outlet and inlet valves.6. Set the selector switches to AUTO.7. Flush a toilet or open a tap connected to the tank.8. Check that the liquid level reaches the start level.9. Check that the system starts and stops automatically at least twice.

Multilift MD1, MDV | Starting up the product| 15

5. Product description

5.1 ApplicationsThe product is designed for the collection and pumping of wastewater with no free flow to sewerlevel. Typically the product is installed below sewer level in cellars or basements in buildings suchas:

• large-scale multifamily houses• public and commercial buildings• blocks of flats• schools• offices• hotels• restaurants• hospitals• industries.

5.2 Pumped liquidsThe product is designed for the collection and pumping of these liquids:

• wastewater• sludge-containing water• domestic wastewater containing faecal matter.

The free passage of the product enables pumping of liquids containing solids from 65 to 80 mm indiameter, depending on the pump type.Do not discharge these substances or types of wastewater via the product:

• Solid matter, tar, sand, cement, ash, coarse paper, paper towels, cardboard, debris, gar-bage, grease and oil.

• Wastewater from sanitary installations situated below the backflow level must be drainedaway via a free-flow drainage system according to EN 12056-1.

• Wastewater containing hazardous substances such as greasy wastewater from large-scalecatering establishments.For drainage of greasy wastewater, use a grease separator according to EN 1825.

• Rainwater of large areas outside the building, for example parking lots, must be collectedand discharged outside the building with separate pumping stations.

Related information• 13.1 Operating conditions

5.3 Lifting station5.3.1 Tank

The gas-, odour- and pressure-tight tank is made of resistant polyethylene. The tank has all nec-essary ports for the connection of inlet pipes, outlet pipe, vent pipe and a manually operated dia-phragm pump available as an accessory.Inside the tank the two pump connections are connected to a suction bend enabling suction fromthe bottom. As a result, the residual volume is reduced to a minimum.The table below shows the tank volume and the effective volume. The effective volume is the vol-ume between start and stop.

Number of tanks 1 2 3

Tank volume [l] 450 900 1350

Effective volume with stop delay [l] 225 450 675

Effective volume without stop delay [l] 150 300 450


5.3.2 PumpsThe pumps are standard wastewater pumps with supporting feet for horizontal installation. Thepumps come in two versions:

Multilift system Pump version

MD1 SE1, SL1 pump with single-channel impeller

MDV SEV, SLV pump with SuperVortex impeller

5.3.3 Operating modesSE pumps

• Continuous operation: The pump runs continuously.• Intermittent operation: Within a duty cycle of 1 minute, the pump must be stopped for 30

seconds to cool down.SL pumps

• Intermittent operation: Within a duty cycle of 1 minute, the pump must be stopped for 30seconds to cool down. The maximum ambient temperature is 30 °C.

We recommend maximum 30 starts per hour for both pump types. However, 60 starts per hourwithin a two-hour period at peak load are allowed. The purpose is to minimise wear of the shaftseal, bearings and motor.For further information, see the installation and operating instructions for the pumps.

5.3.4 Motor protectionA thermal switch is incorporated in the motor windings. A motor-protective circuit breaker is incor-porated in the control cabinet, and the controller has an additional current measurement function.


5.3.5 Level sensorThe level sensor consists of a piezoresistive pressure sensor and a pressure tube connected by apressure hose. The pressure tube is located underneath the screw cap and extends down into thetank. The screw cap includes a condensate trap and a connection for the tube. You can removethe pressure tube for maintenance, service and cleaning. The pressure sensor measures the liq-uid level in the tank. The rising liquid level compresses the air inside the pressure tube and hose,and the piezoresistive pressure sensor transforms the changing pressure into an analog signal.The controller uses the analog signal to start and stop the pump and to indicate high-level alarm.

1

2

3

Pos. Description

1 Hose connecting the pressure tube with the pressure sensor

2 Screw cap

3 Pressure tube


5.3.6 Inspection coverThe inspection cover enables inspection of the tank during operation.

1

Pos. Description

1 Inspection cover

5.3.7 Non-return valveLifting stations must be provided with an approved non-return valve according to EN 12050-1 andmust be approved according to EN 12050-4. The non-return valve must have a correct free pas-sage and a lifting device, for example a screw, to drain the outlet pipe back into the tank.


5.4 Controller5.4.1 Display

1

8 9 10 11 12 13 14

2 3 4 5 6 7

Pos. Description

1 Automatic modeThe symbol is on when the selector switch is in position AUTO.

2 Settings lockedYou can prevent unauthorised persons from making changes tothe settings by locking the controller. To unlock the controller,enter this code: 1234.

3 Information menuInformation about fault, operating hours, number of starts andaverage motor current.

4 Settings menuInformation about and setting of start level, rated current, start,stop and alarm delays, maintenance interval and automatic ormanual resetting of alarms.

5 AlarmThe alarm code appears from the information menu.

6 Impulse counterWhen the symbol is on, the display shows the number of starts.

7 Settable times and fault indicationWhen the symbol is on, the display shows the number of operat-ing hours, start, stop or alarm delays.

8 Pump 1The symbol is on when pump 1 is running, and the symbolflashes if pump 1 has a fault.

9 Pump 2The symbol is on when pump 2 is running, and the symbolflashes if pump 2 has a fault.

10 Phase-sequence faultThe symbol applies only to three-phase pumps. The symbolflashes if the phase sequence is wrong or a phase is missing.

11 OverheatingThe symbol is on if the motor temperature exceeds the permis-sible value, and the thermal switch has cut out the pump.


Pos. Description

12 High-level alarmThe symbol is on if the liquid level has reached the maximumlevel.

13 Liquid levelWhen the symbol is on, the display shows the liquid level.

14 Values in the form of digitsThe value of the function selected.

5.4.2 Buttons

1 2 3

Pos. Description

1 Press this button to go left in the main menu, up in the verticalmenus or decrease a value.

2 Press this button to activate the submenus, confirm the selec-tion or reset the buzzer.

3 Press this button to go right in the main menu, down in the verti-cal menus or increase a value.


5.4.3 Selector switches

1 2

3

4

5

Pos. Description

1 Selector switch, pump 1

2 Selector switch, pump 2

3 ONSet the selector switch to this position to start the pumps man-ually.

4 OFFSet the selector switch to this position to stop the pumps andswitch off the power supply to the pumps.

5 AUTOSet the selector switch to this position to enable automaticmode.

5.4.4 Status LEDs

1 2

Pos. Description

1 The LED is green when the system is running.

2 The LED flashes red when there is a fault.


5.4.5 MenusThere are two menus in the controller:

• settings menu• information menu

Settings menu

Menu Designation Description

L_01 Start level Set the start level in this menu.

I_02 Rated current Set the rated current.

T_01 Stop delay Set a stop delay for the pumps.

T_02 Start delay Set a start delay for thepumps.

T_03 Alarm delay Set an alarm delay for the sys-tem.

M_01 Maintenance interval Set the maintenance interval to0, 3, 6 or 12 months. To disa-ble the function, set the intervalto 0 months.

A_01 Resetting of alarms Select manual or automatic re-setting of alarms.

G_01 Resetting to factory settings -

Exit Exit Go back to the main menu.

Information menu

Menu Designation Description

F_01 Fault log The fault log shows the latest20 faults.

R_01 Hours counter [h] The hours counter shows thenumber of operating hours.

R_02 Impulse counter The impulse counter shows thenumber of starts.

R_03 Motor current [A] The motor current is the aver-age of the last 20 measure-ments.

Exit Exit Go back to the main menu.

5.4.6 Factory settings

Function Factory setting

Start level Not set from factory.

Rated current Not set from factory; to be set according to the motor nameplate.

Stop delay 1 second

Start delay 0 seconds

Alarm delay 5 seconds

Maintenance interval 0 months


5.4.7 Overview of input and output terminals

17

18

19

20

21

1234567

P2 P1 P1P2

8 NC

NO

NC

NO

NC

NONC

NO

NC

NO

NCNO

9

10

11

12

13

15 14 16

X6

X7X8

X9

X10

X11

14 13 12 11 T1 T1T2 T2 PE N PE NW2 V2 U2 W1 V1 U1 PE N L3 L2 L1

Pos. Terminal Description

1 PE, N, L3, L2, L1 Connection to power supply

2 PE, N, W1, V1, U1 Connection, pump 1

3 PE, N, W2, V2, U2 Connection, pump 2

4 T1, T2 Thermal switch, pump 1

5 T1, T2 Thermal switch, pump 2

6 11, 12 Reset of external alarm buzzer

7 13, 14 External alarm

8 X11 Common fault

9 X10 High-level alarm

10 X9 Fault, pump 2


Pos. Terminal Description

11 X8 Fault, pump 1

12 X7 Operation, pump 2

13 X6 Operation, pump 1

14 81-88 Level switches

14 81, 82 High-level alarm*1

15 91 (GND), 92 (signal), 93 (12V)

Analog sensors

16 - Connection, PC Tool

17 - Not used

18 0.1 A T Control-current fuse

19 - Piezoresistive pressure sensormodule

20 - DIP switches, not used

21 - Connection, non-rechargeable9 V battery

*1 The high-level alarm can be used as a level detection backup when installed in parallel toan analog level sensor. The high-level alarm starts and stops the pump by float switchhysteresis with a factory-set stop delay of 60 seconds. You can adjust the stop delay bymeans of Grundfos PC Tool.

5.5 Optional equipment5.5.1 Accessories

For available accessories, see the link or QR code below.http://net.grundfos.com/qr/i/98288126

5.5.2 Drainage pumpIf the lifting station is installed in a basement with penetrating groundwater, we recommend thatyou install a drainage pump in a separate pump sump below floor level. In some countries, adrainage pump or only a pump sump is required.


6. Identification

6.1 Lifting station6.1.1 Nameplate

The nameplate is located on the tank.

Typ

Prod.-Nr.

P. c.

f Hz

Serial no.

Phases

U V

A

kW

G kg

m

m

981270550197

I1/1

P1

Qmax

Hmin

Hmax

T Medmax

T Ambmax

m /h3

C

C

Made in Germany 9607

5419

DK - 8850 Bjerringbro, Denmark1

2

3

4

5

6

12

13

14

15

1617

18

19

20

10

9

7

8

11

Pos. Description

1 Type designation

2 Product number

3 Production code, year and week

4 Frequency

5 Number of phases

6 Rated voltage

7 Full-load current

8 Motor input power, P1

9 Notified body

10 Reference number for the declaration of performance

11 EAC and CE marks

12 Duty type

13 Serial number

14 Maximum flow rate

15 Minimum head

16 Maximum head

17 Maximum liquid temperature

18 Maximum ambient temperature

19 Weight

20 Standard used: Construction Products Directive 89/106/EEC


6.1.2 Type keyExample: MD1.80.100.15.4.50D/450-2 SE

Code Designation Explanation

M Type range Multilift lifting station

D Number of pumps Two pumps

1 Impeller type Single-channel impeller

V SuperVortex impeller

80 Free passage [mm] Maximum solids size

100 Pump outlet [mm] Nominal diameter of pump outlet

15 Power [W] Output power, P2/100

2 Number of poles and speed 2-pole, 3000 min-1

4 4-pole, 1500 min-1

5 Frequency [Hz] 50

6 60

0D Voltage and starting method 380-415 V, direct-on-line

1D 380-415 V, star-delta

0E 220-240 V, direct-on-line

1E 220-240 V, star-delta

450 Tank volume 450 litres

[ ] Number of tanks One tank

2 Two tanks

SE Pump type SE pump

SL SL pump


6.2 Controller6.2.1 Nameplate

The nameplate is located on the side of the control cabinet.

Made in Germany

DK-8850 BJERRINGBRO DENMARK

TypeProd.-No.

P.c.PhasesIPump max

IFuse max

TAmb min TAmb max

U Contact max IContact max

Serial no.U

G

V

VWA

A

A kg

Hzf

P max

Ic < 10 kAIP55

C C

9818

9707

3

1

2

11

13

14

15

16

17

1819

20

21

4

5

67

8

9

10

12

Pos. Description

1 Company address

2 Type designation

3 Product number

4 Production code, year and week

5 Number of phases

6 Maximum pump input current

7 Maximum voltage at potential-free contact

8 Maximum backup fuse

9 Minimum ambient temperature

10 Rated breaking capacity of the motor protection characteristic C

11 CE and EAC marks

12 Enclosure class

13 Version

14 Serial number

15 Rated voltage

16 Maximum power consumption

17 Maximum current at potential-free contact

18 Weight

19 Maximum ambient temperature

20 Frequency

21 Country of origin


6.2.2 Type keyExample: LC 221.2.230.1.10.30 SD

Code Designation Explanation

LC 221 Controller type Level controller

1 Number of pumps One pump

2 Two pumps

230 Voltage [V] 230

1 Number of phases Single-phase

3 Three-phase

10 Maximum operating current [A] -

30/150 Capacitor size, operation and start, [µF] -

[ ] Starting method Direct-on-line

SD Star-delta


7. Control functions

7.1 Settings menu7.1.1 Start and stop levels

The start level of the first pump is preset according to the selected inlet height. The second pumphas a higher start level which is activated if the first pump cannot discharge the inflow.Both pumps stop when the stop level is reached.The controller switches between the pumps to ensure an even distribution of operating hours.If the first pump does not start when the first start level is reached, the other pump starts automati-cally, and the controller display indicates an alarm.If the first pump stops due to a failure, the second pump starts automatically, and the controllerdisplay indicates an alarm.You can set the start levels in the settings menu.

Related information• 8.1.1 Setting the start level

7.1.2 Rated currentThe purpose of setting the rated current is to give the system the data required to protect the mo-tor.You must set the rated current during the startup and adjust the motor-protective circuit breaker.

7.1.3 Stop delayThe stop delay is the time from when the stop level is reached until the pump stops. The stop de-lay reduces water hammer in case of a long inlet pipe.You can set a stop delay in the settings menu T_01.

7.1.4 Pump start delayThe pump start delay is the time from when the start level is reached until the pump starts.You can set a pump start delay in the settings menu T_02.

7.1.5 System start delayThe start delay is the time from when the start level is reached until the system starts.The factory setting is 45 seconds. You can reduce the delay to 5 seconds by pressing OK.

7.1.6 Restarting delayWhen restarting the system after an intentional or unintentional power cut, the controller automati-cally delays the startup by up to 45 seconds. You can reduce the delay to 5 seconds by pressingOK. The purpose of the delay is to even out the mains load when several appliances are startedup at the same time.

7.1.7 Alarm delayThe alarm delay is the time from when a high-level alarm is detected until an alarm is indicated.The alarm delay prevents high-level alarm in case of a temporary high inflow to the tank.You can set an alarm delay in the settings menu T_03.

7.1.8 Maintenance intervalYou can set the maintenance interval in the settings menu M_01.

7.1.9 Factory settingsYou can reset the controller to the factory settings in the settings menu G_01. This removes anymanual settings.

7.2 Information menu7.2.1 Fault log

The fault log shows the latest 20 faults.See the fault log in the information menu F_01.

7.2.2 Hours counterThe hours counter shows the operating hours for each pump.See the hours counter in the information menu R_01.


7.2.3 Impulse counterThe impulse counter shows the number of starts for each pump.See the impulse counter in the information menu R_02.

7.2.4 Highest measured motor currentThe menu shows the highest measured current to each motor.See the highest measured motor current in the information menu R_03.


8. Operating the product

8.1 Setting the controller8.1.1 Setting the start level

When you switch on the controller for the first time, the startup wizard guides you through the nec-essary settings. If you later want to change the start level, follow these steps:

1. Go to the settings menu.2. Press OK.3. Go to menu L_01.4. Press OK.5. Select the start level.

• Select 450 mm if the low inlet is used.• Select 700 mm if the high inlet is used.

Select 450 mm if the inlet pipe height is between the two values.6. Press OK.

8.1.2 Setting the rated currentWhen you switch on the controller for the first time, the startup wizard guides you through the nec-essary settings. If you later want to change the rated motor current, follow these steps:

1. Go to the settings menu.2. Press OK.3. Go to menu I_02.4. Press OK.5. Press arrow right or left to set the rated current according to the motor nameplate.6. Press OK.

8.1.3 Setting the stop delay1. Go to the settings menu.2. Press OK.3. Go to menu T_01.4. Press OK.5. Press arrow right or left to set the delay in seconds.6. Press OK.

8.1.4 Setting the start delay1. Go to the settings menu.2. Press OK.3. Go to menu T_02.4. Press OK.5. Press arrow right or left to set the delay in seconds.

The factory setting is 0.6. Press OK.

8.1.5 Setting the alarm delay1. Go to the settings menu.2. Press OK.3. Go to menu T_03.4. Press OK.5. Press arrow right or left to set the delay in seconds.6. Press OK.


8.1.6 Setting the maintenance interval1. Go to the settings menu.2. Press OK.3. Go to menu M_01.4. Press OK.5. Press arrow right or left to select the interval:

• 0 months• 3 months• 6 months• 12 months.

6. Press OK.8.1.7 Setting of manual or automatic resetting of alarms

1. Go to the settings menu.2. Press OK.3. Go to menu A_01.4. Press OK.5. Press arrow right or left to select how to reset alarms:

• MAN• AUTO.

6. Press OK.8.1.8 Resetting the controller to the factory settings

1. Go to the settings menu.2. Press OK.3. Go to menu G_01.4. Press OK.

When you have reset the controller, the startup wizard starts.


9. Servicing the product



WARNINGBiological hazardDeath or serious personal injury● Flush the lifting station thoroughly with clean water and drain the outlet pipes.

Close the isolating valves. Rinse the dismantled parts in water. Wear person-al protective equipment.

CAUTIONHot surfaceMinor or moderate personal injury● The surface of the product may be so hot that it will cause burns or personal

injury.



9.1 Maintenance schedule9.1.1 Maintenance intervals

According to EN 12056-4, the lifting station must be checked at the following intervals to ensuresafe and reliable operation:

• every 12 months in single-family houses• every 6 months in multifamily houses• every 3 months in commercial and industrial applications.

The product may be installed in environments requiring shorter maintenance intervals.

Related information• 8.1.6 Setting the maintenance interval

9.2 Mechanical maintenance9.2.1 Maintaining the product

• Check that all pipe connections are tight.• Fix any leakages.• Remove any deposits or sludge buildup in the tank.• Check the tank for cracks and deformations.• Remove any blockages on the inlet side of the lifting station.• Check the pump according to the installation and operating instructions for the pump.

Multilift MD1, MDV | Servicing the product| 34

9.2.2 Cleaning the pressure tube and hose1. Set the selector switches to OFF.2. Close all inlet valves.3. Loosen the screw cap.

4. Pull the pressure tube carefully out of the tank.5. Remove any deposits. If necessary, disconnect the pressure hose from the pressure sensor,

and rinse the tube and hose with clean water at low pressure. Make sure that no water re-mains in the pressure hose.

6. Fit the pressure tube in the tank, and tighten the screw cap.7. Connect the pressure hose to the pressure sensor.8. Set the selector switches to AUTO.

Related information• 5.3.5 Level sensor

9.3 Electrical maintenance• Check the gasket of the control cabinet front.• Check the cable entries in the control cabinet.• Check the cable connections.• Check the pressure hose connections.• Check the controller functions.• Check the terminals on the main board for possible corrosion.• If a non-rechargeable 9 V battery is fitted, replace it once a year.

Related information• 9.2.2 Cleaning the pressure tube and hose

Multilift MD1, MDV | Servicing the product| 35

10. Returning the product for service1. If the product cannot be serviced on site, send it to Grundfos or an authorised service work-

shop.Costs of returning the product for service are to be paid by the customer.

2. Before you return the product for service, contact Grundfos or the service workshop with de-tails about the pumped liquid. Otherwise, Grundfos or the service workshop may refuse toreceive the product.

3. Thoroughly clean the product before returning it.

Multilift MD1, MDV | Returning the product for service| 36

11. Taking the product out of operation


injury.

1. Close the inlet valves.2. Empty the tank:

a. Run one pump manually.b. Stop the pump.c. Use a diaphragm pump to empty the tank below the pump inlet height.

3. Close the outlet valves.4. Switch off the power to the pumps and the controller.

Multilift MD1, MDV | Taking the product out of operation| 37

12. Fault finding the product



WARNINGBiological hazardDeath or serious personal injury● Flush the lifting station thoroughly with clean water and drain the outlet pipes.

Close the isolating valves. Rinse the dismantled parts in water. Wear person-al protective equipment.


injury.



12.1 F001• The red LED is flashing.• The buzzer and the alarm symbol are on.• Display text: F001.• The symbol of the pump is flashing.• The symbol of the phase sequence is flashing.

Cause Remedy

Wrong phase sequence Change the phase sequence with the phase inverter in the CEEplug.

Interchange two conductors.

Multilift MD1, MDV | Fault finding the product| 38

12.2 F002Conditions:

• The red LED is flashing.• The buzzer and the alarm symbol are on.• Display text: F002.• The symbol of the phase sequence is flashing.

Cause Remedy

Missing phase Connect the missing phase.

12.3 F003• The red LED is flashing.• The buzzer and the alarm symbol are on.• Display text: F003.• The symbol of the high-level alarm is flashing.• Both pumps are running.

This alarm indicates high liquid level in the tank. The inflow is higher than the outflow.

Cause Remedy

Not all outlet valves are open. Open all outlet valves.

There is a blockage in the tankor pump.

Remove the blockage.

The pump is not vented cor-rectly. The pump cannot buildup pressure.

1. Check that the vent flange is correctly fitted between thepump outlet and the outlet valve.

2. Check that the vent hose is correctly fitted between thevent flange and the tank.

3. Remove any blockage from the vent pipe or vent flange.

The lifting station is under-sized.

Recalculate the inflow parameters and compare the result withthe tank volume and pump performance. If you need a newproduct, contact the nearest Grundfos sales company.

Related information• 3.2.2.1 Installing the pumps

12.4 F007, F008• The red LED is flashing.• The buzzer and the alarm symbol are on.• The symbol of the pump is flashing.• The faulty pump stops, and the other pump starts.• Display text: F007 or F008.

The controller has detected overcurrent and stopped the faulty pump.

Fault code Cause Remedy

F007 Pump 1 is blocked. Remove the blockage.

Missing phase, pump 1. 1. Check the motor windings.2. Connect the missing phase.

F008 Pump 2 is blocked. Remove the blockage.

Missing phase, pump 2. 1. Check the motor windings.2. Connect the missing phase.


12.5 F117• The red LED is flashing.• The buzzer and the alarm symbol are on.• Display text: F117.

Cause Remedy

The cable between the main board and the display is not con-nected properly.

Disconnect and reconnect thecable.

The cable between the main board and the display is not con-nected properly or is defective.

Replace the cable.Use an ethernet cable, RJ45.

The problem is still not solved.The connectors between the main board and the display maybe defective.

Contact the nearest Grundfossales company.

12.6 RELAY• The red LED is flashing.• The buzzer and the alarm symbol are on.• Display text: RELAY.• The pump does not start or stop.• The symbol of the pump is flashing.

Find the cause of the alarm by means of the fault code in the information menu F_01.

Faultcode

Cause Remedy

F015 The relay or contactor for pump 1 is defective. The pump does not stop. Solution 1

F017 The relay or contactor for pump 2 is defective. The pump does not stop.

F016 The relay or contactor for pump 1 does not close. The pump does not start.The motor-protective circuit breaker has tripped, or the main board is de-fective.

Solution 2

F018 The relay or contactor for pump 2 does not close. The pump does not start.The motor-protective circuit breaker has tripped, or the main board is de-fective.

Solution 11. Switch off the power supply to stop the pump.2. Replace the defective relay or contactor.

Solution 21. Reset the motor-protective circuit breaker.2. Start the pump manually and make sure that it is running.3. If resetting the motor-protective circuit breaker does not solve the problem, contact the near-

est Grundfos sales company.


12.7 TEMP• The red LED is flashing.• The buzzer and the alarm symbol are on.• The temperature symbol is flashing.• The symbol of the pump is flashing.• The faulty pump stops, and the other pump starts.• Display text: TEMP.

The pump has started too many times and is overheated. The thermal switch has stopped thepump.

Cause Remedy

Leakage or incorrect sizing ofthe lifting station.

1. Check the non-return valve for any leakage.2. If there is no leakage, check the inflow parameters.

The inflow must not be higher than the pump performance.If the inflow is too high, contact the nearest Grundfos salescompany or reduce the inflow.

3. Allow the pump to cool. The pump restarts automatically.

12.8 SENSOR• The red LED is flashing.• The buzzer and the alarm symbol are on.• Display text: SENSOR.

The alarm indicates that the sensor signal is out of range. Go to the information menu F_01.1. If the fault code F003 appears on top of the list, there is a high-level alarm. The inflow is

higher than the outflow, and the liquid level is above the sensor measuring range of 1000mm. The pumps have been started. Go to solution 1.

2. If F003 is not one of the latest faults, the sensor type could have accidentally been changedvia the display or Grundfos PC Tool. Go to solution 2.

3. If the problem is still not solved, contact the nearest Grundfos sales company.

Solution 1

Cause Remedy

Not all outlet valves areopen.

Open all outlet valves.

There is a blockage in thetank or pump.

Remove the blockage.

The pump is not vented cor-rectly. The pump cannotbuild up pressure.

1. Check that the vent flange is correctly fitted between thepump outlet and the outlet valve.

2. Check that the vent hose is correctly fitted between the ventflange and the tank.

3. Remove any blockage from the vent pipe or vent flange.

The lifting station is under-sized.

Recalculate the inflow parameters and compare the result with thetank volume and pump performance. If you need a new product,contact the nearest Grundfos sales company.

Solution 2

Cause Remedy

The sensor type has accidentallybeen changed.

Reset the controller to the factory settings in the settingsmenu G_01.

Related information• 3.2.2.1 Installing the pumps


12.9 EXTERN• The red LED is flashing.• The buzzer and the alarm symbol are on.• Display text: EXTERN.

Cause Remedy

Flooding outside the tank. Thealarm is related to the externallevel switch connected to thecontroller.

Find the source of the flooding and eliminate the problem.

12.10 BATT• The red LED is flashing.• The buzzer and the alarm symbol are on.• Display text: BATT.

Cause Remedy

The battery is discharged. Replace the battery.Use a non-rechargeable battery.


12.11 The pumps do not start• The power supply is switched on.• The selector switches are in position AUTO or ON.

The display is off

Cause Remedy

The control-current fuse is blown. Solution 1

The supply cable to the controller is defective. Solution 2

The connections of the controller supply cable are loose. Solution 3

The main board is defective. Solution 6

The cable between the main board and the display is not con-nected properly or is defective.

Solution 7

The problem is still not solved. Solution 4

The display is on

Cause Remedy

The pump supply cable is notconnected properly to the con-troller.

Solution 3

The pump supply cable is de-fective.

Solution 2

The display indicates a liquid level which is lower than the level in the tank

Cause Remedy

There is a leakage in the levelsensor.

Solution 5

Solution 11. Find and eliminate the cause.2. Replace the fuse.

Solution 2Replace the cable.Contact the nearest Grundfos sales company.Solution 3Tighten the cable connections.Solution 4The controller is defective.Contact the nearest Grundfos sales company.Solution 5

• Check the connection between the pressure tube and the pressure hose.• Check the connection between the pressure hose and the pneumatic coupling underneath

the controller.The hose is connected correctly when you cannot pull it out without pressing the lockingmechanism.

• Check the connection between the pressure hose and the pressure sensor on the mainboard.

Solution 61. Check that all the connections to the main board are tight.2. If not, the main board is defective and you must replace it.

Contact the nearest Grundfos sales company.Solution 7


1. Check that the cable is connected properly at both ends.2. If the problem is still not solved, replace the cable.

Use an ethernet cable, RJ45.


12.12 The pumps start randomly• No alarm

Cause Remedy

Automatic test run 24 hours af-ter last operation.

No action necessary. It is a safety function that prevents theshaft seal from seizing up.



13. Technical data

13.1 Operating conditionsController

Ambient temperature duringoperation [°C]

0-40

Pump

Ambient temperature [°C] SE: -20 to +40SL: -20 to +30

Liquid temperature [°C] 0-40For short periods up to 60

pH value 4-10

Maximum density [kg/m3] 1100

Sound pressure level Less than 70 dB (A)

13.2 Mechanical dataControl cabinet

Ambient temperature in stock [°C] -30 to +60

Height x width x depth [mm] Direct-on-line starting: 390 x 262 x 142

Star-delta starting: 680 x 380 x 350

Weight See the controller nameplate.

Enclosure class Direct-on-line starting: IP55

Star-delta starting: IP54


13.3 Electrical dataPower supply

Supply voltage [V] 3 x 380-415, PE

3 x 220-240, PE

Voltage tolerances - 10 %/+ 6 % of rated voltage

Frequency [Hz] 50 or 60

Supply system earthing TN system

Backup fuse See the controller nameplate.

Controller

Voltage tolerances - 10 %/+ 6 % of rated voltage

Frequency [Hz] 50 or 60

Control-current fuse Fine-wire fuse, 100 mA, 250 V, 20 mm x ∅5

Outputs for alarm devices Potential-free contacts, NO/NC, maximum 250 VAC, 2 A

Input, external reset 230 V

Power consumption [W] Approximately 7



14. Disposing of the productThis product or parts of it must be disposed of in an environmentally sound way.

1. Use the public or private waste collection service.2. If this is not possible, contact the nearest Grundfos company or service workshop.

Subject to alterations.

Multilift MD1, MDV | Disposing of the product| 46

ArgentinaBombas GRUNDFOS de Argentina S.A.Ruta Panamericana km. 37.500 Centro In-dustrial Garin1619 - Garín Pcia. de B.A.Phone: +54-3327 414 444Telefax: +54-3327 411 111

AustraliaGRUNDFOS Pumps Pty. Ltd.P.O. Box 2040Regency ParkSouth Australia 5942Phone: +61-8-8461-4611Telefax: +61-8-8340-0155

AustriaGRUNDFOS Pumpen Vertrieb Ges.m.b.H.Grundfosstraße 2A-5082 Grödig/SalzburgPhone: +43-6246-883-0Telefax: +43-6246-883-30

BelgiumN.V. GRUNDFOS Bellux S.A.Boomsesteenweg 81-83B-2630 AartselaarPhone: +32-3-870 7300Telefax: +32-3-870 7301

BelarusПредставительство ГРУНДФОС в Минске220125, Минск, ул. Шафарнянская, 11, оф.56Phone: +7 (375 17) 286 39 72, 286 39 73Telefax: +7 (375 17) 286 39 71E-mail: [email protected]

Bosnia and HerzegovinaGRUNDFOS SarajevoTrg Heroja 16BiH-71000 SarajevoPhone: +387 33 713 290Telefax: +387 33 659 079E-mail: [email protected]

BrazilBOMBAS GRUNDFOS DO BRASILAv. Humberto de Alencar Castelo Branco,630CEP 09850 - 300São Bernardo do Campo - SPPhone: +55-11 4393 5533Telefax: +55-11 4343 5015

BulgariaGrundfos Bulgaria EOODSlatina DistrictIztochna Tangenta street no. 100BG - 1592 SofiaPhone: +359 2 49 22 200Telefax: +359 2 49 22 201E-mail: [email protected]

CanadaGRUNDFOS Canada Inc.2941 Brighton RoadOakville, OntarioL6H 6C9Phone: +1-905 829 9533Telefax: +1-905 829 9512

ChinaGRUNDFOS Pumps (Shanghai) Co. Ltd.10F The Hub, No. 33 Suhong RoadMinhang DistrictShanghai 201106 PRCPhone: +86-21 6122 5222Telefax: +86-21 6122 5333

CroatiaGRUNDFOS CROATIA d.o.o.Cebini 37, BuzinHR-10010 ZagrebPhone: +385 1 6595 400Telefax: +385 1 6595 499

Czech RepublicGRUNDFOS Sales Czechia and Slovakias.r.o.Čajkovského 21779 00 OlomoucPhone: +420-585-716 111

DenmarkGRUNDFOS DK A/SMartin Bachs Vej 3DK-8850 BjerringbroPhone: +45-87 50 50 50Telefax: +45-87 50 51 51E-mail: [email protected]

EstoniaGRUNDFOS Pumps Eesti OÜPeterburi tee 92G11415 TallinnPhone: + 372 606 1690Telefax: + 372 606 1691

FinlandOY GRUNDFOS Pumput ABTrukkikuja 1FI-01360 VantaaPhone: +358-(0)207 889 500

FrancePompes GRUNDFOS Distribution S.A.Parc d’Activités de Chesnes57, rue de MalacombeF-38290 St. Quentin Fallavier (Lyon)Phone: +33-4 74 82 15 15Telefax: +33-4 74 94 10 51

GermanyGRUNDFOS GMBHSchlüterstr. 3340699 ErkrathPhone: +49-(0) 211 929 69-0Telefax: +49-(0) 211 929 69-3799E-mail: [email protected] in Deutschland: [email protected]

GreeceGRUNDFOS Hellas A.E.B.E.20th km. Athinon-Markopoulou Av.P.O. Box 71GR-19002 PeaniaPhone: +0030-210-66 83 400Telefax: +0030-210-66 46 273

Hong KongGRUNDFOS Pumps (Hong Kong) Ltd.Unit 1, Ground floor, Siu Wai Industrial Centre29-33 Wing Hong Street & 68 King LamStreet, Cheung Sha WanKowloonPhone: +852-27861706 / 27861741Telefax: +852-27858664

HungaryGRUNDFOS Hungária Kft.Park u. 8H-2045 TörökbálintPhone: +36-23 511 110Telefax: +36-23 511 111

IndiaGRUNDFOS Pumps India Private Limited118 Old Mahabalipuram RoadThoraipakkamChennai 600 097Phone: +91-44 4596 6800

IndonesiaPT GRUNDFOS PompaGraha Intirub Lt. 2 & 3Jln. Cililitan Besar No.454. Makasar, JakartaTimurID-Jakarta 13650Phone: +62 21-469-51900Telefax: +62 21-460 6910 / 460 6901

IrelandGRUNDFOS (Ireland) Ltd.Unit A, Merrywell Business ParkBallymount Road LowerDublin 12Phone: +353-1-4089 800Telefax: +353-1-4089 830

ItalyGRUNDFOS Pompe Italia S.r.l.Via Gran Sasso 4I-20060 Truccazzano (Milano)Phone: +39-02-95838112Telefax: +39-02-95309290 / 95838461

JapanGRUNDFOS Pumps K.K.1-2-3, Shin-Miyakoda, Kita-kuHamamatsu431-2103 JapanPhone: +81 53 428 4760Telefax: +81 53 428 5005

KoreaGRUNDFOS Pumps Korea Ltd.6th Floor, Aju Building 679-5Yeoksam-dong, Kangnam-ku, 135-916Seoul, KoreaPhone: +82-2-5317 600Telefax: +82-2-5633 725

LatviaSIA GRUNDFOS Pumps LatviaDeglava biznesa centrsAugusta Deglava ielā 60LV-1035, Rīga,Phone: + 371 714 9640, 7 149 641Telefax: + 371 914 9646

LithuaniaGRUNDFOS Pumps UABSmolensko g. 6LT-03201 VilniusPhone: + 370 52 395 430Telefax: + 370 52 395 431

MalaysiaGRUNDFOS Pumps Sdn. Bhd.7 Jalan Peguam U1/25Glenmarie Industrial Park40150 Shah Alam, SelangorPhone: +60-3-5569 2922Telefax: +60-3-5569 2866

MexicoBombas GRUNDFOS de MéxicoS.A. de C.V.Boulevard TLC No. 15Parque Industrial Stiva AeropuertoApodaca, N.L. 66600Phone: +52-81-8144 4000Telefax: +52-81-8144 4010

NetherlandsGRUNDFOS NetherlandsVeluwezoom 351326 AE AlmerePostbus 220151302 CA ALMEREPhone: +31-88-478 6336Telefax: +31-88-478 6332E-mail: [email protected]

New ZealandGRUNDFOS Pumps NZ Ltd.17 Beatrice Tinsley CrescentNorth Harbour Industrial EstateAlbany, AucklandPhone: +64-9-415 3240Telefax: +64-9-415 3250

NorwayGRUNDFOS Pumper A/SStrømsveien 344Postboks 235, LeirdalN-1011 OsloPhone: +47-22 90 47 00Telefax: +47-22 32 21 50

PolandGRUNDFOS Pompy Sp. z o.o.ul. Klonowa 23Baranowo k. PoznaniaPL-62-081 PrzeźmierowoPhone: (+48-61) 650 13 00Telefax: (+48-61) 650 13 50

PortugalBombas GRUNDFOS Portugal, S.A.Rua Calvet de Magalhães, 241Apartado 1079P-2770-153 Paço de ArcosPhone: +351-21-440 76 00Telefax: +351-21-440 76 90

RomaniaGRUNDFOS Pompe România SRLBd. Biruintei, nr 103Pantelimon county IlfovPhone: +40 21 200 4100Telefax: +40 21 200 4101E-mail: [email protected]

RussiaООО Грундфос Россия 109544г. Москва, ул. Школьная, 39Phone: (+7) 495 564-88-00 (495) 737-30-00Telefax: (+7) 495 564 88 11E-mail: [email protected]

SerbiaGRUNDFOS Predstavništvo BeogradDr. Milutina Ivkovića 2a/29YU-11000 BeogradPhone: +381 11 26 47 877 / 11 26 47 496Telefax: +381 11 26 48 340

SingaporeGRUNDFOS (Singapore)Pte. Ltd.25 Jalan TukangSingapore 619264Phone: +65-6681 9688Telefax: +65-6681 9689

SlovakiaGRUNDFOS s.r.o.Prievozská 4D 821 09 BRATISLAVAPhone: +421 2 5020 1426sk.grundfos.com

SloveniaGRUNDFOS LJUBLJANA, d.o.o.Leskoškova 9e, 1122 LjubljanaPhone: +386 (0) 1 568 06 10Telefax: +386 (0)1 568 0619E-mail: [email protected]

South AfricaGRUNDFOS (PTY) LTDCorner Mountjoy and George Allen RoadsWilbart Ext. 2, Bedfordview 2008Phone: (+27) 11 579 4800Telefax: (+27) 11 455 6066E-mail: [email protected]

SpainBombas GRUNDFOS España S.A.Camino de la Fuentecilla, s/nE-28110 Algete (Madrid)Phone: +34-91-848 8800Telefax: +34-91-628 0465

SwedenGRUNDFOS AB(Box 333) Lunnagårdsgatan 6431 24 MölndalPhone: +46 31 332 23 000Telefax: +46 31 331 94 60

SwitzerlandGRUNDFOS Pumpen AGBruggacherstrasse 10CH-8117 Fällanden/ZHPhone: +41-44-806 8111Telefax: +41-44-806 8115

TaiwanGRUNDFOS Pumps (Taiwan) Ltd.7 Floor, 219 Min-Chuan RoadTaichung, Taiwan, R.O.C.Phone: +886-4-2305 0868Telefax: +886-4-2305 0878

ThailandGRUNDFOS (Thailand) Ltd.92 Chaloem Phrakiat Rama 9 RoadDokmai, Pravej, Bangkok 10250Phone: +66-2-725 8999Telefax: +66-2-725 8998

TurkeyGRUNDFOS POMPA San. ve Tic. Ltd. Sti.Gebze Organize Sanayi BölgesiIhsan dede Caddesi2. yol 200. Sokak No. 20441490 Gebze/ KocaeliPhone: +90 - 262-679 7979Telefax: +90 - 262-679 7905E-mail: [email protected]

UkraineБізнес Центр ЄвропаСтоличне шосе, 103м. Київ, 03131, УкраїнаPhone: (+38 044) 237 04 00Telefax: (+38 044) 237 04 01E-mail: [email protected]

United Arab EmiratesGRUNDFOS Gulf DistributionP.O. Box 16768Jebel Ali Free Zone, DubaiPhone: +971 4 8815 166Telefax: +971 4 8815 136

United KingdomGRUNDFOS Pumps Ltd.Grovebury RoadLeighton Buzzard/Beds. LU7 4TLPhone: +44-1525-850000Telefax: +44-1525-850011

U.S.A.GRUNDFOS Pumps Corporation17100 West 118th Terrace, OlatheKansas 66061Phone: +1-913-227-3400Telefax: +1-913-227-3500

UzbekistanGrundfos Tashkent, UzbekistanThe Representative Office of Grundfos Ka-zakhstan in Uzbekistan38a, Oybek street, TashkentPhone: (+998) 71 150 3290 / 71 150 3291Telefax: (+998) 71 150 3292

Revision InfoLast revised on 13-10-2016

96102304 1016ECM: 1194668

www.grundfos.com

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